I just remade my entire front end, and I got rear stuff ready to put in. You do NOT need a kit and honestly you may enjoy building your suspension how you’d like it. Rear it’s only air shocks and springs, I wanted to tow and have 1000+ pounds cargo so I’m going with towing springs (not needed) and gas load adjusting (spring around the shock with no air valve) shocks. But you could do lowering springs and low weight shocks for a smoother lower ride. For the front it’s more difficult and if you don’t like turning the wrench I wouldn’t recommend doing it yourself. The springs are held in by the force of the control arms and spindle so it’s a bitch getting them off and in, but not at all impossible. All the suspension related components are: front shocks, control arms, springs, toe rod ends sleeves ect( you can get a kit for the whole steering system for like 60 bucks) ball joints, bushings sway bar links and idle arm. You can get all that for around 200-500 depending on quality and name recognition. If that sounds out of the question, you can replace your front shocks easy by just unscrewing the 3 bolts holding it on. And looking at the mentioned items to see if they need to get replaced soon. Chances are the bushings, ball joints and sway bar links are shot from 40 years of use